Merge pull request #9142 from Carreau/editlog

Remember list of tempfile for %edit

IPython/core/magics/code.py

@@ -147,6 +147,10 b' class InteractivelyDefined(Exception):'
 class CodeMagics(Magics):
     """Magics related to code management (loading, saving, editing, ...)."""
 
+    def __init__(self, *args, **kwargs):
+        self._knowntemps = set()
+        super(CodeMagics, self).__init__(*args, **kwargs)
+
     @line_magic
     def save(self, parameter_s=''):
         """Save a set of lines or a macro to a given filename.
@@ -661,6 +665,12 b' class CodeMagics(Magics):'
             # just give up.
             return
 
+        if is_temp:
+            self._knowntemps.add(filename)
+        elif (filename in self._knowntemps):
+            is_temp = True
+
+
         # do actual editing here
         print('Editing...', end=' ')
         sys.stdout.flush()